Personally I´d welcome the Mugen Tsukuyomi, but I can fully understand too the feelings of those fighting against it in the series, as they still have their hopes and dreams intact, unlike Obito and Madara. And despite all of this resistance against his plans, Obito still seems so 'good' in a sense the way he sympathizes with his fellow shinobi, telling them they´ve endured enough and even reaching out to them with the words: "Just lay there quietly. You´ve endured enough..."
I must say, Madara and Obito both got my respect and admiration for the way they seek to establish what is really the only way towards true peace. Perfection is a lie, the imperfection in perfection itself is the fact that it can´t satisfy everyone. I love it how Kishimoto made this series, setting a huge war between two sides who are both right in their own ways, the world coming together to push themselves for a change for the better, and the ones who seek to force the final solution to the world's problems, at least for a while for all it´s worth.